<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/img/login.png" alt="">
      </div>
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFromRules" label-width="0px" class="login_from">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" placeholder="请输入密码"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFromRules: {
        // 验证用户是否合法
        username: [
          {required: true, message: "请输入用户名", trigger: "blur"},
          {min: 3, max: 10, message: "长度在3到10个字符", trigger:"blur"}
        ],
        // 验证密码是否合法
        password: [
          {required: true, message: "请输入密码", trigger: "blur"},
          {min: 6, max: 15, message: "长度在6到15个字符", trigger:"blur"}
        ]
      }
    }
  },
  methods: {
    // 重置登录表单事件
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate( async valid => {
        if (!valid) return 
        const {data: res} = await this.$http.post('login', this.loginForm)
        if(res.meta.status != 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    border-radius: 3%;
    transform: translate(-50%, -50%);
    .avatar_box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%,-30%);
      background-color: #eee;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }
  .login_from {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .btns {
    display: flex;
    justify-content: flex-end;
  }
</style>
